Documentation
¶
Overview ¶
Package meter provides a simple meter system for metrics. The metrics are aggregated by the meter provider.
Index ¶
Constants ¶
This section is empty.
Variables ¶
var DefBuckets = Buckets{.005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10}
DefBuckets is the default buckets for histograms.
Functions ¶
This section is empty.
Types ¶
type Counter ¶
type Counter interface {
Instrument
Inc(delta float64, labelValues ...string)
}
Counter is a metric that represents a single numerical value that only ever goes up.
type Gauge ¶
type Gauge interface {
Instrument
Set(value float64, labelValues ...string)
Add(delta float64, labelValues ...string)
}
Gauge is a metric that represents a single numerical value that can arbitrarily go up and down.
type HierarchicalScope ¶
type HierarchicalScope struct {
// contains filtered or unexported fields
}
HierarchicalScope is a Scope implementation that supports hierarchical scopes.
func (*HierarchicalScope) ConstLabels ¶
func (s *HierarchicalScope) ConstLabels(labels LabelPairs) Scope
ConstLabels merges the given labels with the labels of the parent scope.
func (*HierarchicalScope) GetLabels ¶
func (s *HierarchicalScope) GetLabels() LabelPairs
GetLabels returns the labels of this scope.
func (*HierarchicalScope) GetNamespace ¶
func (s *HierarchicalScope) GetNamespace() string
GetNamespace returns the namespace of this scope.
func (*HierarchicalScope) SubScope ¶
func (s *HierarchicalScope) SubScope(name string) Scope
SubScope creates a new sub-scope with the given name.
type Histogram ¶
type Histogram interface {
Instrument
Observe(value float64, labelValues ...string)
}
Histogram is a metric that represents the statistical distribution of a set of values.
type Instrument ¶
type Instrument interface {
// Delete the metric with the given label values.
Delete(labelValues ...string) bool
}
Instrument is the interface for a metric.
type LabelPairs ¶
LabelPairs is a map of label names to label values, which is used to identify a metric.
func (LabelPairs) Merge ¶
func (p LabelPairs) Merge(other LabelPairs) LabelPairs
Merge merges the given label pairs with the current label pairs.
type NoopProvider ¶
type NoopProvider struct{}
NoopProvider is a no-op implementation of the Provider interface.
func (NoopProvider) Counter ¶
func (NoopProvider) Counter(_ string, _ ...string) Counter
Counter returns a no-op implementation of the Counter interface.
type Provider ¶
type Provider interface {
Counter(name string, labelNames ...string) Counter
Gauge(name string, labelNames ...string) Gauge
Histogram(name string, buckets Buckets, labelNames ...string) Histogram
}
Provider is the interface for a metrics provider, which is responsible for creating metrics.
type Scope ¶
type Scope interface {
ConstLabels(labels LabelPairs) Scope
SubScope(name string) Scope
GetNamespace() string
GetLabels() LabelPairs
}
Scope is a namespace wrapper for metrics.
func NewHierarchicalScope ¶
NewHierarchicalScope creates a new hierarchical scope.
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